鲁浈浈,何杨,王杰,袁治城.环氧树脂/SiO2涂层混凝土表面主动抗凝冰性及除冰性能研究[J].表面技术,2020,49(10):169-175.
LU Zhen-zhen,HE Yang,WANG Jie,YUAN Zhi-cheng.Initiative Anti-icing Performance and Deicing Ability of Epoxy/SiO2 Coating Concrete Surface[J].Surface Technology,2020,49(10):169-175 |
| 环氧树脂/SiO2涂层混凝土表面主动抗凝冰性及除冰性能研究 |
| Initiative Anti-icing Performance and Deicing Ability of Epoxy/SiO2 Coating Concrete Surface |
| 投稿时间：2019-09-04 修订日期：2020-10-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2020.10.018 |
| 中文关键词: 混凝土 超疏水涂层 抗结冰性 易除冰性 环氧树脂 二氧化硅 |
| 英文关键词:concrete superhydrophobic coating anti-icing deicing epikote silicon dioxide |
| 基金项目:国家杰出青年科学基金（51425801），贵州省科技厅重点项目（[2017]2035） |
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| Author | Institution |
| LU Zhen-zhen | School of Architecture and Construction, Chongqing Jiaotong University, Chongqing 400074, China |
| HE Yang | School of Architecture and Construction, Chongqing Jiaotong University, Chongqing 400074, China |
| WANG Jie | School of Architecture and Construction, Chongqing Jiaotong University, Chongqing 400074, China |
| YUAN Zhi-cheng | School of Architecture and Construction, Chongqing Jiaotong University, Chongqing 400074, China |
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| 中文摘要: |
| 目的 了解超疏水涂层混凝土路面的抗凝冰性能，克服混凝土路面除冰困难问题。方法 将环氧树脂与无水乙醇混合得到涂料底层，纳米二氧化硅与无水乙醇混合得到涂料面层，分别将涂料底层和面层喷涂于混凝土表面，制备了一种由环氧树脂及二氧化硅纳米颗粒组成超疏水涂层。利用水滴在超疏水表面易滚落的特性来减少低温下混凝土表面的结冰量。同时由于混凝土表面存在超疏水涂层，混凝土表面与结冰接触面之间存在一层空气膜，可大幅减小路面冰层与混凝土接触面间的粘附力，达到易除冰的目的。结果 制备的超疏水涂层有良好的超疏水性，静态水接触角达到152°±1.9°，滚动角约为4°±1.2°；在–20 ℃下，冷冻2 h仍能保持超疏水性；同时，还能大幅度降低混凝土的渗水率。与普通混凝土相比，超疏水涂层混凝土表面的结冰量明显减少，并且冰层与混凝土表面的粘附力仅为普通混凝土的14%，结冰更易清除。结论 超疏水涂层能很好地改善混凝土表面的抗结冰性能，减少混凝土表面结冰量，降低冰层与混凝土表面的粘附力。 |
| 英文摘要: |
| The work aims to prepare a superhydrophobic coating composed of epoxy resin and silica nanoparticles in order to obtain the anti-icing property of concrete surface and overcome the difficulty of concrete surface deicing. The epoxy resin was mixed with anhydrous ethanol to get the coating bottom layer, nano silica was mixed with anhydrous ethanol to get the coating surface layer, and the coating bottom layer and surface layer were sprayed on the concrete surface respectively to make the concrete surface obtain superhydrophobic property. The characteristics of water droplet falling easily on the surface of superhydrophobic coating were used to reduce the amount of ice on the surface of concrete at low temperature. At the same time, due to the superhydrophobic coating on the concrete surface, there was a layer of air film between the concrete surface and the icing contact surface, which greatly reduced the adhesion between the icing surface and the concrete contact surface, and achieved the purpose of easy deicing. The results showed that the prepared superhydrophobic coating had good superhydrophobicity, the contact angle of static water was 152°±1.9°, and the rolling angle was about 4°±1.2°. Superhydrophobicity could still be maintained when frozen at –20 ℃ for 2 h. At the same time, the seepage rate of concrete could be greatly reduced. Compared with ordinary concrete, superhydrophobic coated concrete could significantly reduce the amount of ice on the concrete surface, the adhesion between ice and concrete surface is only 14% of that of ordinary concrete, so the ice was easier to remove. Superhydrophobic coating can improve the anti-icing performance of concrete surface, reduce the amount of ice on concrete surface, and decrease the adhesion between ice and concrete surface. |
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